NON-ISOLATED DC/DC CONVERTERS
5 Vdc - 13.8 Vdc Input
0.8375 Vdc – 5.0 Vdc/80 A Output
Sep. 03, 2010
Bel Power Inc., a subsidiary of Bel Fuse Inc.
Absolute Maximum Ratings
Parameter
Min
Typ
Max
Notes
Input Voltage (continuous)
Output Enable Terminal Voltage
Ambient Temperature
-0.3 V
-
15 V
-0.3 V
0 °C
-
-
-
15 V
70 °C
125 °C
Storage Temperature
-55 °C
Input Specifications
Parameter
Min
Typ
Max
Notes
Input Voltage
Vo≤2.5 V
Vo >2.5 V
5 V
1.8*Vo
12 V
12 V
13.8 V
13.8 V
Input Current (full load)
-
-
48 A
With simulated source impedance of 1
uH, 5 Hz to 20 MHz. Use a 1000
uF/16 V electrolytic capacitor with
ESR=0.1 ohm max, at 100 kHz at
25°C.
Input Reflected Ripple Current (pk-pk)
-
20
35
Input Reflected Ripple Current (rms)
-
5
10
I2t Inrush Current Transient
Turn-on Voltage Threshold
Under Voltage Threshold
-
-
-
-
1 A2s
4.8 V
4.5 V
4.6 V
4.3 V
Note: All specifications are typical at 25 °C unless otherwise stated.
Output Specifications
Parameter
Min
Typ
Max
Notes
Output Voltage Set Point
Vo≥1 V
Vo＜1 V
-1.5 % Vo
-10 mV
-
-
+1.5 % Vo
+10 mV
Vin=Vinmin, Io=Iomax
Load Regulation
Line Regulation
Vo≥2.5 V
Vo＜2.5 V
-
-
-
-
0.6% Vo
12 mV
Vo≥2.5 V
Vo＜2.5 V
-
-
-
-
0.6% Vo
9 mV
Regulation Over Temperature
-
-
0.02% Vo/C
(0 °C to +70 °C)
Total Regulation
Vo≥2.5 V
Vo＜2.5 V
-
-
-
-
2 % Vo
15 mV
Output Ripple and Noise (pk-pk)
Vo=5.0 V
Vo=3.3 V
Vo=2.5 V
Vo=1.5 V
Vo=1.0 V
-
-
-
-
-
-
-
-
-
-
-
-
80 mV
80 mV
60 mV
60 mV
50 mV
50 mV
Test conditions:
0-20 MHz BW, with a 1 µF
ceramic capacitor and a 10 uF
Tantalum cap at output.
Vo=0.8375 V
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com
